Printing-press.



J. WHITE.

PRINTIEG PRESS. APPLIOATION FILED AUG.9, 1910. mgmggq Patented May 7,1912.

Z SHEETSSHEET 1-.

J. WHITE.

PRINTING PRESS.

APPLICATION FILED me e, 1910.

.2 SHEETSSHEET 2.

jiT ms 7" UNITED sTATEsrATEnT. onmon.

JOSEPH WHITE, OF BEECHWOOD HEIGHTS, NEW JERSEY, A SSIGNOR TO HALLPRINTING PRESS COMPANY, DUNELLEN, NEW J EBSEY, A CORPORATION OF NEWJERSEY.

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Application filed August 9 which includes a form carrying cylinder andan impressioncylinder wherein these printing cylinders make a pluralityof revolutions to one impression; the impression cylinder taking thesheet 'on'one revolution and delivering it ozi another revolution, andthe plate cylinder in its revolutions causing the form to pass over theink rollers twice for the purpose of inking the same. In

this type of machine during one revolution the sheet is presented to thecylinder surface and an impression taken." thereon in which case thecylinders are inllprinting relationwith one another, and in the nextrevolution the sheet is delivered, and the impressiongsurface passes theform surface with the printing cylinders slightly apart.

This II. .kes it necessary to cause one or both of the cylinders to bemoved into'an'd out of impression relation once for each printingoperation. "It is usual to move the impression cylinder. but this hasits disadvantages due to therelation of the parts composing the gripper'taking mechanism being altered relatively and causing inaccuracies anddifli-' culty in registering the sheets to be printed.

1 have arranged this machine so that the plate cylinder 1s moved insteadof the impression cylinder, and inorder to keep the inking rollers inproper relation to theform, I have arranged the mechanism so; that theform rollers will remain fixed relatively to the form cylinder as it" iscaused to move to and from\ the impression cylinder. By this arrangementinking of the form is properly accomplished and at the same time theimpressionl cylinder can be located in fixed bearings, thus admitting ofgreater accuracy ofvregister than if placed in movable bearings.

The machine embodying these improve- Specifieation of Letters Patent.

, 1910. .Serial No. 576,418.

accompanying form roller carriage moved away from the form cylinder.Fig. 3 is a sectional elevation showing the roller carriage movingmechanism.

bearings 2 which are mounted in the side frames 3 of the machine. Thesebearing are preferably fixed and non-adjustable. The form cylinder 4 is.mounted in the side which maybe of any usual or well-known ings 5,whichare rocked to raise and lower sion cylinder. The mechanism formoving -these boxes may be varied widely, .but as illustrated itpreferably-consists of a rockshaft 6 upon either end offwhich arefastened rock levers 7, ,upon which is fastened the stud 8 which passesthrough the eye 9 on the end of the connecting rod 10, said connectingrod having a turn-buckle 11 (which has the usual right and 'lefthandedscrew), the other end of which is'fastened in "the connection 12, onwhich is' formed the eye 13 which moves on the studl, which .is.fastened on the arms 15, which are formed on the eccentric journal boxes5, which move the plate cylinder. I

The turn-buckle herein mentioned is for the purpose ofregulatingtheamount of printing pressure between the two cylinders. This method} ispreferably employed, 'although pressure-controlling means mightotherwise be devised without departing from the principles of theinvention. 4 The driving mechanism of the machine consists of the shaft16 to which is applied "the usual pulley (not shown), and upon thisshaft .is pinion 17 meshing with an intermediate gear 18 mounted on thestud 19 gear118 meshes with a gear 20 fastened to the plate cylinder toand from the impres-,

in the rear side frameof the machine. This PatentedMay 7, 1912. v

chine, showing the cylinders tripped and the Impression cylinder 1 is'journaled in the frames 3.- of the machine in movable bearings type,but are preferably the eccentric bear- I the impression cylinder, andthe gear 20 -meshes wit-h a gear 21 fastened to the form erated may bevaried widely; but as illustrated consists of a cam 24 which actuates alever 25 which is pivoted on the stud 26 mounted in the side frame, oneend of said lever holding therroller 27 which is held in the cam path,and the other end has a pin 28 upon which is pivoted a' connection 29which has formed upon it a Mg 30, and in it a slot 31, through which isplaced a pin 32 which is mounted in lever 33 which is fastened on therockshaft/Y. This pin 32- also has mounted on it a hook 36 whichnormally passes over the lug 30. As the con nection 29 is reciprocatedto and fro, the

v hook 36, engaging the lug causes the le- ,tothe eccentric cylinderboxes,

- lmpression with the impression cylinder.

ver 33 to be oscillated, which rocks the shaft 6 and thereby movestheconnections causing the cylinder to rise and fall into The, machineis provided with a feed board 35 upon which the sheets are placed. Thesesheets are presented to grippers 36 in the impression cylinder and onthe first revolution of the cylinder the sheet is taken from the feedboard and at the contact point of the two cylinders receives itsimpres'sion. During this revolution the form cylinder is raised and inprinting contact When the grippers pass the delivery point they open upand allow the sheet to pass over the strippers 37 on to the deliverytapes 38. In the next revolution of the cylinders before the leading endof the impression cylinderreaches the impression point, theplatecylinder by. means of the mechanism previously described, has beenmoved out of contact with the impression cylinder, and the impressionsurface passes the form surface out of contact and therefore does notreceive an impression during this revolution of the cylinder.

It is desirable to keep the form rollers in contact with the platecylinder during the entire operation of printing. This is accomplishedby moving the ink roller supports so as to keep a relatively fixeddistance-between the form cylinder and the ink rollers, These rollersmay be carried on oneor more carriers and receive the required motion invarious ways, but the are preferably mounted upon a pair 0 ink frameswhich in addition to holding the form rollers 10 also hold thedistributing rollers and mechanism, which is of any usual or'well-knowntype, which as shown,

and out of 1 The frames 39 are supported on a pair of shafts 48 and 49whic pass .throug 1 holes formed in tho frames.

These shafts 48 and 49 are fastened to eccentric sleeves, said' sleevesbeing clu licated on the other side of the machine. hese sleeves are inturn mounted on carriers 52 which are supported on a bed of rollers 53,said bed of rollers in turn resting on the base 54 of the machine.

On the front side of the machine as shown, the eccentric sleeves havearms 55 and 56 formed 011 them, which are joined together by means ofthe connccl 57. the rock lever 7 on the front side of the machine has anarm 58 formed on it to which is fastened a stud 59 in which is pivoted aconnection 60 which has a hook 61 formed on its other end, whichnormally pngagcs a pin 62 fastened in the arm 55; by means of the partspreviously described it can be seen that when the rockshaft 6 is moved,it will 0 erate the eccentric boxes of the form cyliner, causing thecylinder to rise and lower, and will also operate the shafts 4:8 and 49of the roller carrier, causing the form rollers to rise and lower.

The eccentric boxes 15 and the eccentric sleeves 55 and 56 have the sameamount of eccentricity. The cylinder box arms 15 and.

the ink frame carrier eccentric sleeve arms 55 and 56 are of the samelength, and the angular relation of the eccentric centers to the shaftcenters being made alike, it can be seen that the axis of the platecylinder and the axes of the form rollers will .move through arcs of thesame length and parallel to each other and thereby maintain theirrelative distances, thus keeping the form rollers in p oper contact withthe form. As is Well known, it is necessary to throw offthe impressionat times, one of thc objects being toink the form before printingoperation begins. disconnecting the rockshaft from its actuatingmechanism so that the movement imparted by the can will be inoperativeupon it. By means of manual connections notshowmthe hook 36 is raisedout of the .path of the lug 30 so that when the connection .29oscillates forward, instead of moving 'therockshaft, it slides upon thepin 32, leaving the rockshaft and all its connections stationary.

In order to remove the rollers from the machine for the purpose ofcleaning them or for other purposes, the carriers 52 are mounted on thebed of rollers 53, and when This is accomplished by these carriers aredisconnected from the frame by removing the pin Gtfrom the eyes 63formed on the carriers, and lifting the hook 61 off the pin 62, the inkframe can be pushed back away from the form; the position of the pressat such time being as shown in Fig. 2.

hat I claim is:

1. In a printing machine, the combination of an impression c linder, aform carrying cylinder, an ink r0 ler adjacent to the form' cylinder, asupport for said ink roller, means for moving said form cylinder intoand out of printing relation with the impression cylinder during eachprinting operation, means for moving said ink roller support so as tomaintain a relatively fixed axial relation between the form cylinder andthe ink roller; and actuating means for operating the cylinder and theink-roller-supportmoving means so arranged that said actuating means maybe disconnected for the purpose of maintaining the form cylinder intrippedp'osition and the ink form roller in inking relation to the form.i

'2. In a printing machine, the combination of an impression cylinder, aform carrying an ink roller adjacent to the form a frame for said inkroller, eccenfor the form cylinder and eccylinder, cylinder, tricsupports ink roller but maintain a relatively fixed axial relationbetween them.

. 3. In a printing machine, the combination of a form cylinder, a pairof eccentric bearings for said form cylinder, an ink frame, an ink framecarriage, ink rollers for said ink frame, eccentric bearings mounted insaid carriage, a pair of shafts for supporting the ink frames fastenedto said eccen-- tries, means for rocking all the said eccentric bearingsfor the purpose of moving the form cylinder and the form rollers, and

other.

In witness whereof, I have hereunto set my hand in the presence of tWosubscribing Witnesses.

JOSEPH WHITE.

Witnesses:

Lnwrs R. SoHormLn, PHILIP W. HALL.

maintaining an axial fixed relation to each centric supports for the inkframe so arranged as to move the form cylinder and the

